6 Answers | Add Yours
We are given the circumference of a circle. We are asked to find the radius.
We will use the formula Circumference = 2pi(radius)
=> Substitute 3.14 for pi, and 6 for C
=> 6 = 2(3.14)r
=> 6 = 6.28r
=> .955 =r
=> The radius is approximately .96 ft.
What we know:
- C= `2pir`
- C=6 ft
Combine first 2 equations.
Divide `2pi` on both sides.
- r=`3/pi ft`
First, divide the given circumference by 3.14 to get the diameter.
Second, Divide the answer by 2 to get the radius.
1.91/2 = .955
To find the radius of a circle using the given circumference we use the formula for finding Circumference.
Using 3.14 for pi and 6 for the Circumference, we solve for r (radius).
6=2(3.14)r (multiply 2 times pi)
6=6.28r (divide each side of the equal sign by 6.28)
r≈.955 (the result is that r is approximately .955)
Rounding to the nearest hundredths place the radius is about .96 ft.
We’ve answered 319,865 questions. We can answer yours, too.Ask a question